Fortinet officer plans $8.8M stock sale

Fortinet officer John Whittle filed a Rule 144 notice to sell 56,700 shares of common stock after exercising stock options for cash.

Rhea-AI Filing Summary

Fortinet, Inc. (FTNT) is the issuer of common stock that officer John Whittle has filed to sell under Rule 144. The notice covers a proposed sale of 56,700 shares of common stock on September 14, 2026, following an exercise of stock options for cash, with sales expected on NASDAQ.

Key Figures

Shares to be sold: 56,700 shares Aggregate value: $8,849,169.00 Planned sale date: September 14, 2026 +2 more

5 metrics

Shares to be sold 56,700 shares Common stock proposed for sale under Rule 144 by officer John Whittle

Aggregate value $8,849,169.00 Dollar amount associated with the 56,700 shares of Fortinet common stock in the notice

Planned sale date September 14, 2026 Date on which the Rule 144 sale of 56,700 shares is listed

Acquisition method Exercise of stock options Source of the 56,700 shares to be sold for cash

Trading market NASDAQ Market designated for the sale of Fortinet common stock in this notice

Key Terms

Rule 144, Exercise of Stock Options, Common stock

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Exercise of Stock Options financial

"Common | 09/14/2026 | Exercise of Stock Options | Issuer"

Common stock financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing for FTNT disclose about John Whittle?

The filing states that officer John Whittle has filed a notice under Rule 144 to sell 56,700 shares of Fortinet, Inc. common stock, with the planned transaction date of September 14, 2026, after exercising stock options for cash.

How many FTNT shares are covered by John Whittle’s Rule 144 notice?

The Rule 144 notice covers a proposed sale of 56,700 shares of Fortinet, Inc. common stock. These shares are to be sold after an exercise of stock options and are listed for potential sale on September 14, 2026.

What is the approximate aggregate value of the FTNT shares in this Form 144?

The filing shows an aggregate value of $8,849,169.00 associated with the 56,700 shares of Fortinet common stock covered by the Rule 144 notice, indicating the dollar amount tied to the proposed sale.

How are the FTNT shares in this filing being acquired for sale?

The shares are reported as being obtained through the exercise of stock options, with the method of payment listed as cash. After this option exercise, the 56,700 shares are proposed to be sold under Rule 144.

On which market are the FTNT shares in the Form 144 expected to be sold?

The Rule 144 notice indicates that the Fortinet, Inc. common stock covered by this filing is to be sold on NASDAQ, reflecting the market where the 56,700 shares are proposed to be traded.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/14/2026 - 04:57 PM Accepted by SEC EDGAR 09/14/2026 - 04:47 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001476336
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	FORTINET, INC.
SEC File Number	001-34511
Address of Issuer	909 Kifer Road Sunnyvale CALIFORNIA 94086
Phone	4082357700
Name of Person for Whose Account the Securities are To Be Sold	JOHN WHITTLE
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	56700	8849169.00	733713653	09/14/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/14/2026	Exercise of Stock Options	Issuer			56700	09/14/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/05/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ John Whittle
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)